Heating apparatus.



W. G. JONES A. J. W. JOHNSON. 1 A HEATING APPARATUS. l APPLIOATIONFILED JUNN14, 1905.

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l ATTORNJEMS PATENTBD'MAR. 20, 1906.

PATBNTED MAR. 2O, 1906. l JOHNSON. y HEATING APPARATUS.

APPLICATION FILED JUNE14, 1905 3 SHEETS-SHEET 2.

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No. 815,839. A I PATENTED MAR. 2o, 1906. W. G. JONES An J. W. JoHNsoN.

- HEATING APPARATUS. L

APPLICATION FILED JUNE 14, 1905.

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WILBUR e. vJONES .AND JOSEPH w. JOHNSON, OF TORONTO, CANADA.v

` I HEATING APPARATUS- Specification `of Letters Patent.'

Fatentea March 20,1906.

Application filed June 14, 1905. Serial N0- 265,218.

To a/ZZ Awhom it may concern:

Be it known that we, WILBUR G. JONES and JOSEPH WARREN JOHNSON, citizensl ofA 'the United-States, residing in sthe city of Toronto, in the county of York, Province of Ontario, Canada, have'invented certain new and useful Improvements in Heating Appa ratus, of which the following is' aspecifica-y tion.

' lThis'invention relates mainly to that class of combined boilers and air-heaters which are employed for heating and ventilating vbuildings and which comprise a boiler for' pass after leavingthe boiler, which radiator isalso arranged within -said casing or jacket, so that the -air flowing through the latter -is and radiator.-

various other respects.

In the accompanying draw1ngs,cons1sting .of three sheets, 4Figure l is a .perspective view ofa combined'boiler and air-heater provided with our improvements. Fig. 2'is aside elevation of the same, partly in section. Fig. 3 is a vertical transverse section through the rear portion of the apparatus in line 3 3, Fig.

2. Fig. 4 `isa similar section through the front portion of the apparatus in line 4 `4:, Fig. 2. Fig: 5 is a similar section approximately throughthe middle of the apparatus in line 5 5, Fig. 2. Fig. 6 isatop plan view with the top of the casing or jacket removed.

' Like letters ofreference refer -to like parts in the several figures.

A represents the ash-pit; B, the side walls of the furnace, comprising the fire-box `and combustion chamber; and C the boiler, which is preferably,.asshown, a horizontalV cylindrical return-flue boiler suitable for producing steam or hot water, .as maybe preferred. The boiler. is supported oneach side upon the longitudinal sidewalls of the-furllacein such Amanner thatthe boiler and yits ing and contracting.

supporting-walls are free toexpand andcon-A l tract independently. For that purpose the -boiler is provided on each side with a longitudinal flange D, whichrests loosely with its downwardly-facing longitudinal tongue b in agroove a, formed lengthwise in the top lof the side wall of the furnace. The side flanges D close the top portions of the space between the boiler and the side walls lof the furnace, and the grooves a may be packedin any suitable manner to .prevent leakage of gas into .the surrounding space. As the side wallsof the furnace and the boiler are free to move independently of each other in expanding and contracting, injurious strains are avoided. y

K represents the casing or jacket which inycloses the air-space in which the boilerrand 4furnaceare arranged and which is constructedof fbrickwork, as shown, or metal 'and provided in any suitable or well-known manner With air-inlets fk and with flues 7c for conv The objects of .this invention are to im lprove this class .of combined boilersand airheaters with 4a view Aof increasing the Aefficiency thereof :fby producing comparatively large radiating ysurfaces while preserving compactness of structure, simplifying the, construction, preventing -injurious Strains? under unequal expansion and contraction ofl ythe parts, and improving .the apparatus in ducting the heated air to thedesired points.

The side walls of :the furnace are preferably corrugated vertically for facilitating expansion and contraction and increasing the' :below the side vanges D are freely admitted to the rear endsof theboilerliues- The top -ofthe furnace between the vrear wall B` `and the :rear end of the boiler is covered by a plate c. The rear wal-l B is preferably held removablyon-thebottom .plate b ofthe furnace between a rib b2, formed on this plate,

and a removable stop-bar b3, which may be an angle-iron, as shown in Fig. 2.

E represents the smoke-box, which is arranged at the front ofthe boiler and' secured to the furnace-:front E. The front endv of theboiler restslooselyin -thisbox, so that the boiler can move freely in the samelin expand- Any suitable-packing roo'.

may be employedbetween the boiler and the y smoke-box. A

F representsa transverse bifurcated or saddle-shaped flue. which. is mounted yon the smoke-box andvcommu'nicates therewithy by an opening f to receive the `hot gases there-A from. vThis flue has its two branches con-l nected with the front ends of longitudinal radiators G, which are arranged on opposite sides ofthe boilerandfurnace 1n the air-,space IIO of the acket or casing and at such a distance from the sides of the boiler and furnace and from the casing as to provide suitable airpassages between these parts. The branches 5 f of the transverse front flue F open preferably into the tops of the longitudinal radiators G, as represented in Fig. 4. The rear ends of these radiators communicate with the branches 7L of a transverse bifurcated or saddle-shaped rear flue H, which is mounted upon the rear top plate c of the furnace and has an outlet M, Fig. 3, leading to the chimney. The openings t, connecting the rear ends of the radiators with the rear transverse flue H, are preferably formed in the lower portions of the inner side walls of the radiators, as shown in Figs. l and 3.

The draft passes rearwardly through the furnace along the lower portion of the boiler, then forwardly through the boiler-fiues to the smoke-box, then through the transverse front flue to the front ends of the radiators, then rearwardly through the radiators, and then from the rear ends of the radiators through the transverse rear fiue H to the outlet.

By forming the inlet and outlet openings of the radiators respectively at or near the top and'bottom thereof a thorough distribution of the hot gases throughout the crosssection of each radiator is secured, the formation of dead-air spaces is prevented, and uniform heating of the radiators from top to bottom is effected.

In order to provide for a direct draft when desired-as, for instance, in starting the firethe rear top plate c of the furnace is provided with an opening t, Figs. 2 and 3, which registers with a similar opening in the bottom of the rear transverse flue H, and these openings are controlled by a pivoted damper I, having an actuating-arm J, so that upon opening this damper a direct draft from the furnace to the rear fiue H and outlet M is obtained, while by closing the damper the draft is directed through the boiler-fiues and the radiators to the rear flue H.

The radiators G are fiat-sided and comparativelyv narrow, and their inner walls g are preferably curved inwardly at the top to follow approximately the curvature of the boiler in order to compel the air-current ascending between the radiator and boiler to hug the latter closely.

In the preferred construction the boiler is exposed at the top in the air-space to the extent of about one-fourth of the circumference of the boiler, and the tops of the radiators are about on a level with the top of the boiler, so that about three-fourths of the surface of the boiler is exposed to the heat in the firebox and utilized for absorbing heat and onefourth exposed to the air in the air-space and utilized for heating the air. The air passing upwardly through the air-space of the casing or jacket is first heated by the hot corrugated walls of the furnace, then by the hot walls of the radiators, and finally by the exposed top portion of the boiler. The air has become heated to a considerable extent when it reaches the top portion of the boiler, and therefore produces no injurious cooling effect upon the boiler.

le claim as our invention- 1. The combination of a horizontal boiler having a return-flue for the passage of the products of combustion from the rear to the front, a furnace for the same, a longitudinal radiator arranged at the side of the furnace and boiler and spaced therefrom, means for conducting the hot gases from the boiler to the front end of said radiator, a flue connecting the rear end of the radiator with the exit for the gases, and an air-chamber in which the boiler, furnace and radiator are arranged, substantially as set forth.

2. rlhe combination of a horizontal boiler having a return-flue for the passage of the products of combustion from the rear to the front, a furnace for said boiler, an air-chamber in which the boiler and furnace are arranged, longitudinal radiators arranged in. said air-chamber on opposite sides of the boiler and furnace and separated from the boiler and furnace by air-passages, means for conducting the products of combustion from the front end of the return-flue to the front ends of said radiators, and means for discharging the products of combustion from the rear ends of said radiators, substantially as set forth.

3. The combination of a horizontal boiler having a return-'liuc for the passage of the products of combustion from the rear to the front, a furnace for said boiler, an air-chamber in which the boiler and furnace are arranged, longitudinal radiators arranged in said air-chamber on opposite sides of the boiler and furnace and separated from the boiler and furnace by air-passages, a smokebox at the front of the boiler communicating with the front end of said return-Hue, a transverse front fiue receiving the gases from the smoke-box and conducting the same to the front ends of the radiators, and means for discharging the gases from. the rear ends of the radiators, substantially as set forth.

4. The combination of a horizontal boiler having a return-fine for the passage of the products of combustion from the rear to the front, a furnace for said boiler, an airchamber in which the boiler and furnace are arranged, longitudinal radiators arranged in said air-chamber on opposite sides of the boiler and furnace and separated from the boiler and furnace by air-passages, a smokebox at the front of the boiler communicating with the front end of said return-flue, a transverse front fiue receiving the gases from the smoke-box and conducting the same to the IOO IOS

IIO

. front ends of the radiators, anda transverse rear flue which communicates with the rear ends of the radiators and through which the gasesl escape therefrom, substantially as set l't/h'; I

5. The combination of a horizontal boiler having a return-Hue for the 'passage of the products of combustion from the rear to the front, a furnace for the same having metallic side walls which extend to the upper portion of the boiler, an air-chamberin which the boiler and furnace are arranged, longitudinal radiators arranged in said air-chamber opposite the upper portions of said boiler and said metallic furnace-walls and separated therefrom by an air-passage, 4means for conducting the products of combustion from the front end of the return-flue to the front ends of said radiators, and means for dischargingv the products of combustion from the rear ends of said radiators, substantially as set forth.

6. The combination of an air-chamber, a horizontal boiler and furnace arranged therein, and a radiator arranged lengthwise at the side of the furnace andfboiler and separated therefrom by an air-passage, said radiator having a continuous inner wall which is coniposed of an upright lower portion which is arranged opposite the furnace, and an upper, inwardly-overhanging portion which projects toward the upperportion of the boiler, and means for conducting the products of combustion from the boiler to the radiator, substantially as set forth.

7 The combination of an air-chamber, a

' boiler and furnace arranged therein, the

boiler having its top portion exposed above the side walls of the furnace, and longitudinal radiators arranged on opposite sides of the furnace and boiler and separated from the side walls of the furnace and from the boiler by air-passages, said radiators having upright innerv walls whose top portions eX- tend inwardly beyond the lower ortions and toward the top portion of the boi er, substantially as set forth.

8. The combination of a horizontal boiler having a return-flue for the passage ofthe products of combustionfrom the rear to the front, a furnace for the same, a longitudinal radiator arranged at the side of the furnace land boiler, means for conducting'the hot gases from the boiler to the front end of said radiator, a flue connecting the rear end of the radiator with the exit for the gases and communicating by a direct draft-opening with the furnace, and a damper controlling said opening, substantially as set forth.

9. The combination of a horizontal boiler having a return-flue for the passage of the products of combustion from the rear to the front, a furnace for the same, longitudinal radiators arranged on opposite sides of the furnace and boiler, means for conducting the hot gases from the boiler to the front ends of said radiators, a transverse flue connecting the rear ends of the radiators with the exit forthe gases and communicating `by a direct opening with the furnace, and a damper controlling said opening, substantially as set forth.

10. The combination of an air-chamber, a horizontal boiler arranged therein, a radiator arranged lengthwise at the side of the boiler and separated therefrom by an air-passage, said radiator having the inlet for the products of combustion arranged at the top at one end of the radiator and the outlet at the bottom at the opposite end, and means for conducting the products of combustion from the boiler to said inlet, substantially as set forth.

.11. The combination of an air-chamber, a horizontal boiler having a return-flue for the passage of the products of combustion from the rear to the front., a furnace for the same,

longitudinal radiators arranged on opposite sides of the boiler and furnace, a transverse the'top thereof, and a transverserear fiue connected with the rear ends of the radiators atthe bottom thereofand communicating with the eXit forthe products of combustion, substantially as set forth.

' 12. Thev combination of an air-chamber, a horizontal return-flue boiler arranged in the same, a furnace for the boiler, a stationary smoke-box which is secured to the furnace and with which the front end of the boiler is slidably connected, and longitudinal radiators arranged in said air-chamber on opposite sides of the vboiler and furnace and spaced therefrom, said radiators receiving the products of combustion from said smoke-box, substantially as set forth.

13.k The combination of an air-chamber, a horizontal return-flue boiler having longitudinal side flanges, a furnace having side walls upon whichsaid flanges rest and on which said flanges are capable of lengthwise movement, a stationary smoke-box which is secured to the furnace and with which the front end of the boiler is slidably connected, and longitudinal radiators arranged in said air-chamber on opposite sides of the boilerand furnace andspaced therefrom, said radiators receiving the products of combustion from said smoke-box, substantially as set forth.

f Witness our hands this 21st day of May, 1905.

WILBUR G. JONES.

, JOSEPH w. JOHNSON.A 'l

front flue connecting the front end of Ithe vboiler with the front ends of the radiators at 9o IOO 1rov 

